Math Example--Arithmetic--Two-Digit Sums to 20 (No Regrouping)--Example 30

Topic

Addition

Description

Depicts the addition of 3 + 15 using a number line, with "Tens Place" and "Ones Place" placeholders. Demonstrates addition without the need for regrouping. Example 30: Find the sum of 3 + 15 using counting on with a number line. No regrouping is needed, so the tens place is brought down. The result is 18.

In general, addition is a fundamental arithmetic skill that helps students understand the concept of combining quantities. Through these examples, students can see how basic addition works with small numbers, building a strong foundation for more complex operations. By visualizing the steps, students can reinforce their understanding of number relationships.

Seeing multiple worked-out examples allows students to recognize patterns in addition. For instance, consistently seeing sums calculated on a number line or through other visual aids enables them to approach addition with confidence. Reinforcement through examples is essential for deep comprehension and retention of the concept.

Teacher’s Script: Today, we’re looking at an example of adding numbers. In this case, let’s focus on example 30: find the sum of 3 + 15 using counting on with a number line. no regrouping is needed, so the tens place is brought down. the result is 18.. Notice how we carefully add the numbers step by step. Think about how each example builds on what we’ve learned before.

For a complete collection of math examples related to Addition click on this link: Math Examples: Adding Two-Digit Numbers Collection.